The offers came her way after the 30-year-old won accolades for playing an autistic girl Jhilmil in Anurag Basu's "Barfi!".
A source close to Priyanka confirmed the news. "Yes, it's true that she has been contacted by various NGO groups for the cause."
However, owing to her busy schedule, it is not possible for the actress to attend each event separately and thus has made the request for one big event, added the source.